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sip: origin: Try fetching RTCP port from SDP attributes

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And fallback to the legacy behaviour of RTCP=RTP+1
This commit is contained in:
Evangelos Ribeiro Tzaras 2022-02-28 19:59:15 +01:00
parent 849f298609
commit a7fcb9c0c0
1 changed files with 19 additions and 5 deletions
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24
plugins/sip/calls-sip-origin.c
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@ -543,15 +543,15 @@ sip_i_state (int status,
if (status == 503) {
CALLS_EMIT_MESSAGE (origin, "DNS error", GTK_MESSAGE_ERROR);
}
/* XXX making some assumptions about the received SDP message here...
* namely: rtcp port = rtp port + 1
*/
if (r_sdp) {
g_autoptr (GList) codecs =
calls_sip_media_manager_get_codecs_from_sdp (origin->media_manager,
r_sdp->sdp_media);
const char *session_ip = NULL;
const char *media_ip = NULL;
int rtp_port;
int rtcp_port = 0;
g_debug ("Remote SDP was set to:\n%s", r_sdp_str);
@ -575,10 +575,24 @@ sip_i_state (int status,
}
calls_sip_call_set_codecs (call, codecs);
/* TODO This needs to adapt for the ICE case */
rtp_port = r_sdp->sdp_media->m_port;
for (sdp_attribute_t *attr = r_sdp->sdp_media->m_attributes; attr; attr = attr->a_next) {
if (g_strcmp0 (attr->a_name, "rtcp") == 0) {
rtcp_port = atoi (attr->a_value);
break;
}
}
/* Legacy fallback */
if (rtcp_port == 0)
rtcp_port = rtp_port + 1;
calls_sip_call_setup_remote_media_connection (call,
media_ip ? : session_ip,
r_sdp->sdp_media->m_port,
r_sdp->sdp_media->m_port + 1);
rtp_port,
rtcp_port);
}
switch (call_state) {